2121435066 has 32 divisors (see below), whose sum is σ = 4504386240. Its totient is φ = 663780096.

The previous prime is 2121435047. The next prime is 2121435109. The reversal of 2121435066 is 6605341212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11220 + ... + 66096.

It is an arithmetic number, because the mean of its divisors is an integer number (140762070).

Almost surely, 2^2121435066 is an apocalyptic number.

2121435066 is an abundant number, since it is smaller than the sum of its proper divisors (2382951174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121435066 is a wasteful number, since it uses less digits than its factorization.

2121435066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55278.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2121435066 is about 46059.0389174590. The cubic root of 2121435066 is about 1284.9214557310.

Adding to 2121435066 its reverse (6605341212), we get a palindrome (8726776278).

It can be divided in two parts, 21214 and 35066, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 2121435066 in words is "two billion, one hundred twenty-one million, four hundred thirty-five thousand, sixty-six".